题解 | #MP3光标位置#

def xx(a, n):
    flag = 1 #光标位置
    k = 1 #当前歌曲位置
    r = 4 #屏幕歌曲数量
    if n < 4:
        r = n
    for i in a:
        if i == "D":
            if k == n:
                k = 1
                flag = 1
            elif flag != r:
                k += 1
                flag += 1
            else:
                k += 1
        if i == "U":
            if k == 1:
                k = n
                flag = r
            elif flag != 1:
                k -= 1
                flag -= 1
            else:
                k -= 1
    li = " ".join(str(k + i - flag + 1) for i in range(r))
    print(li)
    print(k)

while True:
    try:
        n = int(input())
        a = input()
        xx(a, n)
    except:
        break